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Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 26: Instrumentation VII

HK 26.4: Talk

Tuesday, March 29, 2022, 16:45–17:00, HK-H3

Proof-of-Principle of Collinear Laser Spectroscopy on Neutral Atoms following Photodetachment — •Laura Renth1, Bernhard Maaß1,4, Dag Hanstorp3, Phillip Imgram1, Daniel Koestel2, Di Lu3, Wilfried Nörtershäuser1, and Thomas Walther21IKP, TU Darmstadt — 2IAP, TU Darmstadt — 3University of Gothenburg — 4Argonne National Laboritory, Chicago, USA

At the Collinear Apparatus for Laser Spectroscopy and Applied Physics (COALA) [1] in Darmstadt a new experimental approach was tested to perform collinear laser spectroscopy on boron atoms produced from a negative ion sputtering source.

An ion sputtering source produced negatively charged boron ions which where then guided into the COALA beamline. From this ion beam an atomic beam was created by photodetachement with a pulsed laser. Then, collinear laser spectroscopy was performed for the 2p 2P1/2 → 3s 2S1/2 and for the 2p 2P3/2 → 3s 2S1/2 transitions of 11B and on the the 2p 2P3/23s 2S1/2 transition of 10B. The resonance was only observed after implementing new diagnostic tools at COALA, namely a Wien filter and the generation of short ion pulses to perform time-of-flight (TOF) spectrometry. First results will be presented and the potential of this approach are discussed.

[1] K. König, J. Krämer, C. Geppert, P. Imgram, B. Maaß, T. Ratajczyk, W. Nörtershäuser. A New Collinear Apparatus for Laser Spectroscopy and Applied Science (COALA). Rev. Sci. Instr. 91, 081301 (2020).

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